Plate 42.--Classification:
SYSTEM Lacustrine,
SUBSYSTEM Littoral,
CLASS Unconsolidated Shore,
SUBCLASS Cobble-Gravel,
WATER REGIME Seasonally Flooded,
WATER CHEMISTRY Fresh.
At the time of photography, the level of
Yellowstone Lake was near its seasonal low
point. Due to snowmelt, the level of the lake
rises to a peak in early July and then slowly
declines until the following spring. This
entire beach is inundated each summer.
(Yellowstone National Park, Teton County,
Wyoming; May 1985; Photo by F. C. Golet)

Plate 43.--Classification:
SYSTEM Lacustrine,
SUBSYSTEM Littoral,
CLASS Unconsolidated Shore,
SUBCLASS Sand,
WATER REGIME Intermittently Flooded,
WATER CHEMISTRY Fresh.
Water levels in the Great Lakes generally
fluctuate little during a single year, but they
may rise and fall considerably over a period of
several years. The water level in Lake Michigan
was at an all-time high when this photo was
taken. As a result of long-term changes in lake
levels and seiches produced by storms, lake
waters inundate part or all of this beach on an
irregular basis. (Indiana Dunes National
Lakeshore, Porter County, Indiana; May 1985;
Photo by F. C. Golet)

Plate 44.--Classification:
SYSTEM Lacustrine,
SUBSYSTEM Littoral,
CLASS Unconsolidated Shore,
SUBCLASS Mud,
WATER REGIMES Temporarily Flooded and
Seasonally Flooded,
WATER CHEMISTRY Fresh,
SOIL Mineral,
SPECIAL MODIFIER Impounded.
The flats exposed along the shore of this
reservoir are temporarily flooded; the
seasonally flooded zone is still inundated at
the time of this spring photograph. (Park
County, Wyoming; May 1985; Photo by F. C.
Golet)